Plow-beam



F. A. LEAS PLOW BEAM. APPLICATION FILED SEPLZE, 1920,

Patented Mar. 22, 1921.

SMWM FELDERICK A. Ll/IJ,

FREDERICK A. LEAS, 0F MANILA, PHILIPPINE ISLANDS.

PLOW-BEAM.

Specification of Letters Patent.

Patented Mar. 22, 1921' Application filed September 28, 1920. Serial No.413,279.

To all whom it may concern:

Be it known that I, FREDERICK A. LEAS, a citizen of the United States,residing at Manila, Philippine Islands, have lnvented certain new anduseful Improvements in Plow-Beams, of which the following is aspecification.

This invention relates to an improvement in plows, and the object of theinventlon is to rovide a tubular beam of relatively llght welght inwhich the opposite extremities are particularly constructed to efiect astrong and stable union with other plow parts, all substantially asherein shown and descrlbed and more particularly pointed out in theclaims. The beam is also especially adapted for use in a light plow; itis easily carried in the hand or transported on the shoulder of theoperator; and it is designed to facilitate adjustments and connectionsfor plowing under different working conditions.

In the accompanying drawings, Figure 1 is a side view of the landsidepart of the plow, showing my improved tubular beam. Figs. 2, 3 and 4 areside, end and bottom views of the plow beam enlarged. Fig. 5 is a crosssection of the interfolded clevis end of the beam on line 5-5, Fig. 2,and Fig. 6 is a cross section of the round tubular beam on line 6-6,Fig. 2.

Beam 2 is made of drawn steel tubmg or a metal pipe, preferably round orcircular in cross section to provide the necessary r1- gidity andstrength for the draft or load.

Furt rmore, by making and using a round tubular metal beam the implementcan be carried without inconvenience or fatigue when grasped in the handor when placed at rest upon the shoulder.

The main body of the beam is of 1rregular curvature and the end portionsor extremities are each flattened in a vertical plane. Thus, the frontor clevis end 3 s flattened transversely and split longitudlnally for ashort distance to provide two opposed U-shaped portlons adapted to beinterfolded when pressed toward each other. Four flat folds orthicknesses of metal are provided from the single round wall of the tubeitself, and one or more bolt holesare made through the four walls topermit a clevis to be attached, and these interfo-lded walls provide anexceptionally strong and practical draft end for the beam.

The main body of the beam is preferably round, although the downwardlycurved rear portion 5 might be made oval or elliptical in shape, and theheel end 4 of portion 5 1s flat and expands or spreads to provide a widebearing surface for the attachment of the beam to the inner face of onewall of a single piece frog 6. To obtain the wide bearinw surface 5 thetube is tapered and expanded at one end and then pressed fiat coincidentwith the opposite wall or outer side of the tube. Bolt openings or slots7 are formed in this flat heel 5 to effect an adjustable connection withthe frog 6 of the plow. A U-bolt or yoke 8 provides an additionalconnection for the round part of the beam to the frog, and is used inpreference to drilling or forming a bolt opening through the beam.Furthermore, when the nuts on this U-bolt are loosened the rounded beamma be turned slightly in the yoke or U-bolt and the flattened heel ofthe beam may be fastened flush with or at a diverging angle to thestraight vertical wall of the saddle, and any space or gap between theheel and the saddle may be taken up or filled in at one of the/bolts 18by metal washers.

What I claim is:

1. In a plow, a draft beam made of round tubing having its front endflattened and folded into a plurality of thicknesses and having its rearend curved and flattened and widened.

2. In a plow, a draft beam formed of tub ing having a perforated clevisend split longitudinally and interfolded where split to provide amultiple number of thicknesses of metal.

3. In a plow, a draft beam made of round tubing having a divided draftend which is flattened transversely and pressedtogether to provide fourthicknesses of metal and having a clevis bolt opening extending throughall four thicknesses of metal.

Signed at Manila, Philippine Islands, this 15th day of Jul 1920.

fimnnnicK A. LEAS.

